Fuel-feeding apparatus.



E. A. RIOTTE.

FUEL FEEDING APPARATUS.

APPLICATION FILED JULY 7. 1916.

814012 wroz age/2e J? Fab/[c EueEnE a EIo'rrE, or IDOUGLASTON, EEw voEE, nssrenon ro srnnnn moron."

coEsrEuc'rroE company,- or arEEsEY CITY, NEW JEEsEY, a coEroEn'rroE or EEW JERSEY.

- FUEL-FEEDING APPATUS.

To all whom it may concern Be it known that I, EUGENE A. lltro'r'rn, a

citizen of the United States of America, re- I feeding device for engines of the oil burn} ing or high compression type in which a charge of fuel is forced into the cylinder at the proper period and usually at a time when the air compression in the cylinder 1s at approximately its highest point,

The object of my inventionis to provide a simple and efiective device or apparatus for performing this function.

In the accompanying drawings: Figure 1 isa vertical sectional view of the upper part of an engine cylinder equipped; w1th my fuel feeding apparatus. Fig. 2 is a fragmentary view illustrating certain parts in a diflerent position. I I

It should be understood that the drawings are merely illustrative and do not pretend to give exact proportions. Furthermore the said drawings are illustrative of a preferred construction, it being my expectation that various changes and modifications. may be made without departing from the spirit and scope of my invention.

In that form of the invention shown herein, 1 represents the upper part of an ordinary water jacketed cylinder.

2 represents a piston therein which may be connected in the usual mannerv with the crank shaft, not shown.

3 represents the usual waterjacketed cylinder head. i

4 represents an intake *valve by which air may be admitted to the cylinder to be com.- pressed by the piston ready to receive a charge of fuel.

5 represents a plug which is insertible into a bore in the cylinder head 3 and is made gas tight, as by providing a packing or a ground joint at the lower end which may be ta-. pered, asshown, if desired. The plug 5 may be held in place by any suitable means, such as by bolts 6 6. v

7- is, a fuel feeding piston in the form of a plunger slidable longitudinally in a bore in the plug 5. This piston may have packing rings 8, if desired. The bore in which the piston 7 is lo ated is contra ted at its lower Specification of Letters Patent.

Fatentedl Dec. 12; JlWlb.

Application filed July 7, 1916. Serial 1W0. 167,897.

plug 5. This last mentioned bore opens in lf'.

the first mentioned bore approximately at" the point 12, which, as shown, is just below the lower end of the fuel feeding piston 7 when the latter'is elevated whereby fuel can be fed into the space below thepiston 7 at such a time. J V I 14 is a check valve in the fuel supply pas-. sage. The fuel supply'passage is preferably controllable so as to control the amount of fuel that is fed to the space piston 7. v

In-the drawings, I have shown a'needle underneath the valve 15'which is manually adjustable for 7 the purpose of. varying the amount of fuel in each charge. The fuel feeding piston 7 ,is operated from the engine in any desirable, A

way so as to feed fuel at the proper time in the cycle of operation thereof. In the particular form shown, the fuel feeding piston 7 is moved by a suitable cam 16 thrbugh'the medium of an arm 17, although any other well known means may be substituted. The

valve 4 may be normally closed by a spring 18. In the fuel pipe line 11 there may be provided any desired means for assisting in the feed of the fuel, such a means being illustrated conventionally at 19. Insome instances, and with some kinds of fuel, gravity alone will suflice, in which event the mezlgns 19 may be assumed to be a gravity tan to assist in the closing-of the check valve 14. Any. suitable means may be provided to retract the fuel feeding'piston, but for thepurposes of illustration, 1 have shown a retracting spring 21 which may be secured-at one end to any suitable abutment, and at the other end to the lever 17.

.Operation: In the particular position in- 2'0 is a light spring that may beprovided 7 dicated in the drawings, Fig. 1, the power 1 piston Zisv located in approximately. its highestposition, wherein-the air contained in the cylinder above the piston is at approximately its highest pressure. Obviously, the

pressure in the chamber underneath the fuel feeding piston 7 will, at such time,'be only slightly less, if any, than the air pressure in the working cylinder. Hence, when the fuel feeding piston 7 descends, it will increase /the relative air pressure therein and force any fuel that may be contained in said space der has been scavenged,-that is to say, when theburnt gases have been a new charge of pure air is being drawn-in into the working cylinder, fuel from the tank 10 will .flow past the valve and .check Valve 14 into the space underneath the fuel feeding piston, for at such a time discharged, and

the parts are so arranged that said fuel feeding piston will stand elevated or in the position shown in Fig. 1. When the working piston '2 hasascended tothe proper degreet the cam-16 will be called into "action and will cause the fuel feeding plunger 7 to again descend and force such fuel (mixed with air) as may be contained in the'chamber directly underneath the fuel feedingjpiston 7'into the combustion chamber through passage 9. The fuel feeding piston 7 will then ascend to the position shown in Fig. 1 until it is desired to again inject a new charge. In Fig. 1 the cam 16 is shown conventionallyand in approximately a position ready to force the a direction to inject. fuel.

In Fig. 2 I have shown the fuel feeding piston 7 in approximately its lowermost position in which there is very little clearance,

fuel feeding piston in although this of course maybe varied as varying conditions require.

i' ,pe of ceding;

It should be understood that the fuel feeding means conventionally shown at 19.may any well known pattern capable of predetermined quantities of fuel throng the passage 11 into the fuel feeding bore in synchronism with thestroke of the engine, in-which event the valvemechanism in said passage may be omitted. Such measuring devices are too well known to .require illustration and no claim is made herein to any specific 'form'thereof, itbeing suflicient that it bevunderstood that the means 19 ma 1 be such a device, or may be a device capa leof feeding fuel under pressure to be controlled by the aforesaid valve mechanism; What I claim is: 1. In a fuel feeding apparatus for internal combustion engines, an engine driven fuel feeding piston, a mounting therefor '55 having a bore extending, partially there- .through of a size to snugly receive said fuel feeding piston, with a relatively small fuel feeding passage from the inner end of saidbore to the inner end ofthe mounting, a fuel. feed passage throughtsaid mounting opening into said bore at a point adjacent to the piston at ,the back of its stroke, withmeans for causing said pistonto pause at the back of its strokefor a. period sufficient to permit fuel to enter the, chamber beto permit fuel to enter the c I fuel feeding piston,

piston to be projected tween the inner end of the piston and the contracted fuel outlet and means to cause said piston to be projected at certain times to expel said fuel through said contracted passage.

2. Ina fuel feeding apparatus for internal combustion'engines, an engine driven fuel feeding piston, a mounting therefor having a bore extending partially therethrough of a size to snuglyreceive said fuel feeding piston, with a relatively small fuel feeding passage from the inner end of said bore to the inner end of the mounting, a fuel feed passage through said mounting opening into said bore at a point adjacent to the piston at the back of its stroke, with means for causing said piston to pause at the back of its stroke for a period sufiicient to permit fuel to enter the chamber between the inner end of the piston and the contracted fuel outlet and means to cause said piston to be projected at certain times to expel said fuel through said contracted passage, said plston operating to close said fuel inlet during the feeding period.

3. In a fuel feeding apparatus for internal combustion engines, an engine driven fuel feeding piston, a mounting therefor having a bore extending partially therethrough, of a size to snugly receive said fuel feeding piston, with a relatively small fuel ceding passage from the inner end of said bore to the inner end of the mounting, a fuel feed passage through said mounting openinginto said bore at a point adjacent to the piston at the. back of its stroke, with means for causing said piston to pause at the back ofits stroke for a eriod suflicient amber-between the inner end of, the piston and the contracted fuel outlet and means to cause said piston to be projected at certain times to expel said fuel through said contracted passage, and means for closing said fuel inlet during the feeding movement of the piston against the returnof the fuel therethrough by action of said piston. l

4:. In a fuel feeding apparatus for internal combustion engines, an engine driven a mounting therefor having a bore extending partially therethrough, of a size'to snugly receive said fuel feeding piston, with a relatively small fuel feeding passage from the inner end of said bore to the inner end of the mounting, a fuel feed passage through said mounting opening into said bore at a point adjacent to the piston' at the back of its stroke, with .means for causing said piston to pause at the back of its stroke for a period suflicient to permit fuel to enter the chamber ,between the inner end of tracted fuel outlet, and means to cause said at certain times to expel said fuel through said contracted pas the piston and the con-' sage, said regulating means being manually operable;

5. In a fuel feeding apparatus for internal combustion engines, an engine driven fuel feeding. piston, a mounting therefor having a bore extending partially therethrough, of a size to snugly receive said fuel feeding piston, with a relatively small'fuel feeding passage from theinner end of said bore to the inner end of the mounting, a fuel feed passage through said mounting opening into said bore at a'point adjacent to the piston at the back of its stroke, with means for causing said piston to pause at the back of its stroke for a period sufficient to permit fuel to enter the chamber between the inner end of the piston and the contracted fuel outlet, and means to cause said piston to be projected at certain times to expel said fuel through said contracted passage, said fuel regulating means'being manually operable. v l v,

6. In a fuel feeding apparatus for internal combustion engines, an engine driven fuel feeding piston, a mounting therefor having a bore extending partially therethrough, of a size to snugly receive said fuel feeding piston, with a relatively small fuel feeding passage from the inner end of said bore to the inner end of the mounting, a fuel feed passage through said mounting opening into said bore at a point adjacent to the piston at the back of its stroke, with means for causing said piston to pause at the back of its stroke for a period suficientto permit fuel to enter the chamber between the inner end of the pistonand the contracted fuel outlet, and means to cause said piston to be projected at certain times to expel said fuel through said contracted passage, said fuel regulating means being manuallyoperable, and comprising a needle valve. t I L 7. In a fuel feeding apparatus for internal combustion engines, an engine driven fuel feeding piston, a mounting, therefor having a bore extending partially therethrough, of a size to snugly receive said fuel feeding piston, with a ,relativelyvsmall fuel feeding passage from the innerend of said bore to the inner end of the mounting, a fuel 'feed' passage through said mounting opening into said bore at a point adjacenttothe piston at the back of its stroke, with means for causing said piston to pause at the back of its stroke for a period suflicient to permit fuel to enter the chamber between the inner end of the piston and the con tracted fuel outlet, and means to cause said piston to be projected at certain times to expel said fuel through saidc ontracted passage, said fuel regulating means being manually controllable and comprising a needle valve, and a back check valve in said feed passage.

8. In a fuel feeding means for internal combustion engines, a working cylinder, a working piston therein, an air inlet into said working cylinder, -a fuel feeding pis- -ton,"a 'mounting therefor, including a bore of sufficient size to snugly receive said fuel feeding piston, the inner end of said bore being contracted to form a relatively small fuel feeding passage communicating with the interior of said working cylinder, a fuel feeding passage leading through said mounting and communicating with said bore, to permit fuel to enter the bore between the end'of the fuel feeding vpiston and mounting and communicating with said bore, to permit fuel to enter the bore between the end of the fuel feeding piston and the contracted passage when said fuel feeding piston is retracted, and a fuel regulating means to control the amount of fuel fed through said passage. 1

' EUGENEA. ItIOT'IE. 

